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Rivero Marcos, Mikel

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https://academica-e.unavarra.es/handle/2454/49860

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Rivero Marcos

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Mikel

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Ciencias

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IMAB. Research Institute for Multidisciplinary Applied Biology

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0000-0001-6681-9738

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750707

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811569

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2016 - 201922020 - 20245
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  • Thumbnail Image
    PublicationOpen Access
    Complementary evaluation of iron deficiency root responses to assess the effectiveness of different iron foliar applications for chlorosis remediation
    (Frontiers Media, 2018) Fuentes, Marta; Bacaicoa, Eva; Rivero Marcos, Mikel; Zamarreño, Ángel M.; García Mina, José M.; Ciencias del Medio Natural; Natura Ingurunearen Zientziak; Gobierno de Navarra / Nafarroako Gobernua
    Iron deficiency in plants is caused by a low availability of iron in the soil, and its main visual symptom is leaf yellowing due to a decrease in chlorophyll content, along with a reduction in plant growth and fruit quality. Foliar sprays with Fe compounds are an economic alternative to the treatment with expensive synthetic Fe-chelates applied to the soil, although the efficacy of foliar treatments is rather limited. Generally, plant response to Fe-foliar treatments is monitored by measuring chlorophyll content (or related parameters as SPAD index). However, different studies have shown that foliar Fe sprays cause a local regreening and that translocation of the applied Fe within the plant is quite low. In this context, the aim of this study was to assess the effects of foliar applications of different Fe compounds [FeSO4, Fe(III)-EDTA, and Fe(III)-heptagluconate] on Fe-deficient cucumber plants, by studying the main physiological plant root responses to Fe deficiency [root Fe(III) chelate reductase (FCR) activity; acidification of the nutrient solution; and expression of the Fe deficiency responsive genes encoding FCR, CsFRO1, Fe(II) root transporter CsIRT1, and two plasma membrane H+-ATPases, CsHA1 and CsHA2], along with SPAD index, plant growth and Fe content. The results showed that the overall assessment of Fe-deficiency root responses improved the evaluation of the efficacy of the Fe-foliar treatments compared to just monitoring SPAD indexes. Thus, FCR activity and expression of Fe-deficiency response genes, especially CsFRO1 and CsHA1, preceded the trend of SPAD index and acted as indicators of whether the plant was sensing or not metabolically active Fe due to the treatments. Principal component analysis of the data also provided a graphical tool to evaluate the evolution of plant responses to foliar Fe treatments with time.
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    PublicationOpen Access
    Plant ammonium sensitivity is associated with external pH adaptation, repertoire of nitrogen transporters, and nitrogen requirement
    (Oxford University Press, 2024-03-11) Rivero Marcos, Mikel; Lasa Larrea, Berta; Neves, Tomé; Zamarreño, Ángel M.; García Mina, José M.; García Olaverri, Carmen; Aparicio Tejo, Pedro María; Cruz, Cristina; Ariz Arnedo, Idoia; Ciencias; Zientziak; Estadística, Informática y Matemáticas; Estatistika, Informatika eta Matematika; Institute for Multidisciplinary Research in Applied Biology - IMAB; Institute for Advanced Research in Business and Economics - INARBE; Universidad Publica de Navarra / Nafarroako Unibertsitate Publikoa; Gobierno de Navarra / Nafarroako Gobernua
    Modern crops exhibit diverse sensitivities to ammonium as the primary nitrogen source, influenced by environmental factors such as external pH and nutrient availability. Despite its significance, there is currently no systematic classification of plant species based on their ammonium sensitivity. We conducted a meta-analysis of 50 plant species and present a new classification method based on the comparison of fresh biomass obtained under ammonium and nitrate nutrition. The classification uses the natural logarithm of the biomass ratio as the size effect indicator of ammonium sensitivity. This numerical parameter is associated with critical factors for nitrogen demand and form preference, such as Ellenberg indicators and the repertoire of nitrogen transporters for ammonium and nitrate uptake. Finally, a comparative analysis of the developmental and metabolic responses, including hormonal balance, is conducted in two species with divergent ammonium sensitivity values in the classification. Results indicate that nitrate has a key role in counteracting ammonium toxicity in species with a higher abundance of genes encoding NRT2-type proteins and fewer of those encoding the AMT2-type proteins. Additionally, the study demonstrates the reliability of the phytohormone balance and methylglyoxal content as indicators for anticipating ammonium toxicity. This study emphasizes the importance of ecophysiological requirements and the repertoire of nitrogen transporters in understanding plant sensitivity to ammonium, and enhances our knowledge of plant nitrogen nutrition.
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    PublicationOpen Access
    Unraveling nitrate-mediated mechanisms in response to ammonium toxicity in plants
    (2022) Rivero Marcos, Mikel; Aparicio Tejo, Pedro María; Ariz Arnedo, Idoia; García-Mina Freire, Jose María; Ciencias; Zientziak; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa; Gobierno de Navarra / Nafarroako Gobernua
    Intensive use of nitrate in agriculture has resulted in serious environmental and health problems; however, using ammonium as an exclusive, alternative nitrogen source can have deleterious effects on plant growth. Even at very low concentrations, nitrate counteracts ammonium toxicity in plants, although the molecular nature of this phenomenon remains unclear. In this thesis, we explore the genetic and metabolic mechanisms involved in nitrate-driven ammonium detoxification in species of agricultural interest, such as spinach (Spinacia oleracea L.) and pea (Pisum sativum L.), as well as in the model plant Arabidopsis. The evidence indicates that nitrate alleviates processes that are compromised in ammonium toxicity syndrome, including ammonium uptake- and assimilation-mediated pH stress, potassium homeostasis disturbance, hormonal imbalance, and the strong demand for carbon supply. A better understanding of the mechanisms underlying these beneficial effects will help to modernise agriculture through the efficient design of fertilisers for more sustainable and efficient use of nitrogen.
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    PublicationOpen Access
    Can N nutrition lead to "plant diabetes"? The perspective from ammonium nutrition and methylglyoxal accumulation
    (Frontiers Media, 2022) Rivero Marcos, Mikel; Ariz Arnedo, Idoia; Institute for Multidisciplinary Research in Applied Biology - IMAB; Gobierno de Navarra / Nafarroako Gobernua; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
    Here we introduce a debate about whether plants can be suffering a "diabetes-like syndrome" depending on the N nutrition management. The idea of a plant diabetes is not new and was initially proposed by Saito et al. (2011) when they identified MG as a potent photosystem I-mediated superoxides generator in spinach chloroplasts. Later and along the same lines, Takagi et al. (2014) and Shimakawa et al. (2014) discussed the possible plant diabetes by associating it with the accumulation of MG as a common metabolite of the primary pathways of sugar anabolism and catabolism. Nevertheless, given the increasing relevance of NH+ 4 nutrition for crop production in a context of elevated atmospheric CO2, in addition to being a less polluting alternative to the excessive use of NO- 3 (Subbarao and Searchinger, 2021), we examine here from a new point of view the current knowledge about the glycolytic by-product MG and its link to a possible "NH+ 4 diet"-mediated plant diabetes.
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    PublicationOpen Access
    ModulaTransprot: explorando el uso de la nutrición amoniacal para reducir contenidos de nitrato en hortalizas de hoja en sistemas de cultivo sin suelo
    (Interempresas Media, 2021) Ariz Arnedo, Idoia; Rivero Marcos, Mikel; Cornejo Ibergallartu, Alfonso; García-Mina Freire, Jose María; Cavero, Rita Yolanda; Institute for Multidisciplinary Research in Applied Biology - IMAB; Institute for Advanced Materials and Mathematics - INAMAT2
    Encontrar alternativas a través del diseño de productos y sistemas sostenibles que aumenten la eficiencia en el uso del nitrógeno y disminuya los contenidos de nitratos en tejidos comestibles es una necesidad científica, social y económica.
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    PublicationEmbargo
    Structural role of silicon-mediated cell wall stability for ammonium toxicity alleviation
    (Springer International Publishing, 2023-06-23) Rivero Marcos, Mikel; Silva, Gabriel Barbosa Jr.; Ariz Arnedo, Idoia; Ciencias; Zientziak; Institute for Multidisciplinary Research in Applied Biology - IMAB
    The use of ammonium-based fertilizers together with nitrification inhibitors could be a possible alternative to limit N losses, currently derived from nitrate enrichment of soil and water, which are detrimental to the environment. However, prolonged application of ammonium as the main N source can result in development disorders in most plants, commonly referred to as 'ammonium syndrome'. Even if the origin of plants' sensitivity to ammonium is not fully understood, important biological components related to this syndrome have been unraveled over the last years. These components could constitute key targets to develop tools to counteract ammonium toxicity in crops. Thus, this chapter describes structural and metabolic components of root cells related to plant sensitivity to ammonium and how they could be key targets to combat ammonium toxicity by the use of fortification elements, such as silicon. Si is a beneficial element for plants as it increases their resistance to several stresses, including ammonium. New experimental evidences show specific role of Si in alleviating ammonium toxicity of several crops.
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    PublicationOpen Access
    Nueva oferta educativa como respuesta al desarrollo del país: ingeniería agroindustrial
    (Editorial Tecnológica de Costa Rica, 2016) Guzmán-Hernández, Tomás de Jesús; Fernández Rodríguez, Marcela; Villalobos Murillo, Johanna; Monreal Fernández, Ignacio; Rivero Marcos, Mikel; Ciencias; Zientziak
    Costa Rica, donde la agricultura aún representa una parte importante del Producto Interno Bruto, se encuentra en un proceso de cambio de su economía nacional. La incorporación de valor agregado y la transformación de la materia prima procedentes de este sector se limitan al mejoramiento postcosecha en plantas empacadoras de la producción primaria y a la obtención de pulpas congeladas. Con este artículo se pretende dar a conocer la necesidad de contar con profesionales en agroindustria en tres regiones del país, las regiones Huetar Norte, Caribe y Chorotega y brindar una síntesis de lo alcanzado como propuesta de carrera. La agroindustria juega un papel importante en la economía local, pero muestra un débil desarrollo por falta de recurso humano crítico que condicione los cambios en dichas zonas y a nivel nacional. En ese sentido, se considera que la creación de la carrera de Ingeniería Agroindustrial en la Sede Regional San Carlos del Tecnológico de Costa Rica (TEC) es clave para impulsar al sector. Esta institución de educación superior ha contribuido desde su creación al desarrollo integral del país, desde una perspectiva universitaria estatal de calidad y competitividad nacional e internacional. Con este compromiso, el TEC ha elaborado una propuesta de oferta curricular acorde a las necesidades locales y del país, basada en estudios de mercado, en la experiencia internacional relacionada con el tema objeto de estudio, una extensa revisión bibliográfica y el análisis de la producción y las exportaciones de las regiones. La propuesta también responde a la iniciativa emprendedora y la estrecha vinculación del TEC con los sectores sociales y productivos.